package com.atcd.mq.mq_yanchimq.config;


import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class TtlQueueConfig {
public static final String X_EXCHANGE = "X";
public static final String QUEUE_A = "QA";
public static final String QUEUE_B = "QB";
public static final String Y_DEAD_LETTER_EXCHANGE = "Y";
public static final String DEAD_LETTER_QUEUE = "QD";
//普通队列qc
    public static final String QUEUE_C = "QC";
    // 声明队列 C  死信交换机(优化之后的队列)
    @Bean("queueC")
    public Queue queueC(){
        Map<String, Object> args = new HashMap<>(3);
// 声明当前队列绑定的死信交换机
        args.put("x-dead-letter-exchange", Y_DEAD_LETTER_EXCHANGE);
// 声明当前队列的死信路由 key
        args.put("x-dead-letter-routing-key", "YD");
// 没有声明 TTL 属性，在生产者发消息的时候生成TTL
        return QueueBuilder.durable(QUEUE_C).withArguments(args).build();
    }
    // 声明队列 B 绑定 X 交换机
    @Bean
    public Binding queuecBindingX(@Qualifier("queueC") Queue queueC,
                                  @Qualifier("xExchange") DirectExchange xExchange){
        return BindingBuilder.bind(queueC).to(xExchange).with("XC");
    }
//  声明 xExchange 别名
@Bean("xExchange")
public DirectExchange xExchange(){
return new DirectExchange(X_EXCHANGE);
}
//  声明 xExchange
@Bean("yExchange")
public DirectExchange yExchange(){
return new DirectExchange(Y_DEAD_LETTER_EXCHANGE);
}
// 声明队列 A ttl 为 10s 并绑定到对应的死信交换机
@Bean("queueA")
public Queue queueA(){
Map<String, Object> args = new HashMap<>(3);
// 声明当前队列绑定的死信交换机
args.put("x-dead-letter-exchange", Y_DEAD_LETTER_EXCHANGE);
// 声明当前队列的死信路由 key
args.put("x-dead-letter-routing-key", "YD");
// 声明队列的 TTL
args.put("x-message-ttl", 10000);
return QueueBuilder.durable(QUEUE_A).withArguments(args).build();
}
//  声明队列 A 绑定 X 交换机
@Bean
public Binding queueaBindingX(@Qualifier("queueA") Queue queueA,
                              @Qualifier("xExchange") DirectExchange xExchange){
return BindingBuilder.bind(queueA).to(xExchange).with("XA");
}
// 声明队列 B ttl 为 40s 并绑定到对应的死信交换机
@Bean("queueB")
public Queue queueB(){
Map<String, Object> args = new HashMap<>(3);
// 声明当前队列绑定的死信交换机
args.put("x-dead-letter-exchange", Y_DEAD_LETTER_EXCHANGE);
// 声明当前队列的死信路由 key
args.put("x-dead-letter-routing-key", "YD");
// 声明队列的 TTL
args.put("x-message-ttl", 40000);
return QueueBuilder.durable(QUEUE_B).withArguments(args).build();
}
// 声明队列 B 绑定 X 交换机
@Bean
public Binding queuebBindingX(@Qualifier("queueB") Queue queue1B,
@Qualifier("xExchange") DirectExchange xExchange){
return BindingBuilder.bind(queue1B).to(xExchange).with("XB");
}
// 声明死信队列 QD
@Bean("queueD")
public Queue queueD(){
return new Queue(DEAD_LETTER_QUEUE);
}
// 声明死信队列 QD 绑定关系
@Bean
public Binding deadLetterBindingQAD(@Qualifier("queueD") Queue queueD,
@Qualifier("yExchange") DirectExchange yExchange){
return BindingBuilder.bind(queueD).to(yExchange).with("YD");
}
}